Display device having capacitive touch screen

Abstract

Disclosed herein is a display device having a capacitive touch screen, including: a display unit; and a capacitive touch screen that is coupled to the display unit by an adhesive layer and includes a base substrate, a plurality of first electrode patterns that are formed on an active region of the base substrate, ground patterns that are formed on the active region of the base substrate and are separated from the first electrode pattern, a transparent insulating layer that covers the first electrode patterns and the ground patterns and is formed on the base substrate, and a plurality of second electrode patterns that are formed on an active region of the transparent insulating layer.

What is claimed is: 
     
       1. A display device having a capacitive touch screen, comprising:
 a display unit; and 
 a capacitive touch screen that is coupled to the display unit by an adhesive layer and includes a base substrate, a plurality of first electrode patterns that are formed on an active region of the base substrate, ground patterns that are formed on the active region of the base substrate and are separated from the first electrode patterns, a transparent insulating layer that covers the first electrode patterns and the ground patterns and is formed on the base substrate, and a plurality of second electrode patterns that are formed on an active region of the transparent insulating layer, 
 wherein the ground patterns are structured as shielding layers to reduce noise generated from the display unit from reaching second electrode patterns which include sensing units being stacked on the same line as the ground patterns formed on the lower side of the transparent insulating layer and having an area smaller than that of the ground pattern. 
 
     
     
       2. The display device as set forth in  claim 1 , wherein the capacitive touch screen has the first electrode patterns and the second electrode patterns made of a conductive polymer. 
     
     
       3. The display device as set forth in  claim 2 , wherein the conductive polymer is any one of polythiophene, polypyrrole, polyaniline, polyacetylene, and polyphenylene polymers. 
     
     
       4. The display device as set forth in  claim 1 , wherein the capacitive touch screen further includes a protective layer that covers the second electrode patterns and is formed on the transparent insulating layer. 
     
     
       5. The display device as set forth in  claim 1 , wherein the adhesive layer is formed of a double-sided adhesive sheet that is positioned on an inactive region of the capacitive touch screen so that an air gap is formed between the display unit and the capacitive touch screen.